Charles Webel and Mark Tomass, editors
Routledge, Taylor & Francis Group, 2017
Buku Teks
Shopia University,
Majalah, Jurnal, Buletin
edited by Geoffrey A. Hosking and George F. Cushing
Macmillan Press, 1989
Buku Teks
Buss, Claude Albert, author
Macmillan, 1941
Buku Teks
Hsu, Shuhsi
Kelly & Walsh, 1938
Buku Teks